com.jogamp.opengl
Class FloatUtil

java.lang.Object
  extended by com.jogamp.opengl.FloatUtil

public class FloatUtil
extends Object

Basic Float math utility functions.

Derived from ProjectFloat.java - Created 11-jan-2004

Author:
Erik Duijs, Kenneth Russell, Sven Gothel

Constructor Summary
FloatUtil()
           
 
Method Summary
static void cross(float[] v1, float[] v2, float[] result)
          Calculate cross-product
static void cross(FloatBuffer v1, FloatBuffer v2, FloatBuffer result)
          Calculate cross-product
static void makeIdentityf(float[] m, int offset)
          Make matrix an identity matrix
static void makeIdentityf(FloatBuffer m)
          Make matrix an identity matrix
static void makeZero(float[] m, int offset)
          Make matrix an zero matrix
static void makeZero(FloatBuffer m)
          Make matrix an zero matrix
static void multMatrixf(float[] a, int a_off, float[] b, int b_off, float[] d, int d_off)
           
static void multMatrixf(float[] a, int a_off, float[] b, int b_off, FloatBuffer d)
           
static void multMatrixf(FloatBuffer a, float[] b, int b_off, FloatBuffer d)
           
static void multMatrixf(FloatBuffer a, FloatBuffer b, FloatBuffer d)
           
static void multMatrixVecf(float[] m_in, float[] v_in, float[] v_out)
          Method __gluMultMatrixVecf
static void multMatrixVecf(float[] m_in, int m_in_off, float[] v_in, int v_in_off, float[] v_out)
          Method __gluMultMatrixVecf
static void multMatrixVecf(FloatBuffer m_in, FloatBuffer v_in, FloatBuffer v_out)
          Method __gluMultMatrixVecf
static void normalize(float[] v)
          Normalize vector
static void normalize(FloatBuffer v)
          Normalize vector
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

FloatUtil

public FloatUtil()
Method Detail

makeIdentityf

public static final void makeIdentityf(float[] m,
                                       int offset)
Make matrix an identity matrix


makeIdentityf

public static final void makeIdentityf(FloatBuffer m)
Make matrix an identity matrix


makeZero

public static final void makeZero(float[] m,
                                  int offset)
Make matrix an zero matrix


makeZero

public static final void makeZero(FloatBuffer m)
Make matrix an zero matrix


multMatrixf

public static final void multMatrixf(float[] a,
                                     int a_off,
                                     float[] b,
                                     int b_off,
                                     float[] d,
                                     int d_off)
Parameters:
a -
b -
d - result a*b

multMatrixf

public static final void multMatrixf(float[] a,
                                     int a_off,
                                     float[] b,
                                     int b_off,
                                     FloatBuffer d)
Parameters:
a -
b -
d - result a*b

multMatrixf

public static final void multMatrixf(FloatBuffer a,
                                     float[] b,
                                     int b_off,
                                     FloatBuffer d)
Parameters:
a -
b -
d - result a*b

multMatrixf

public static final void multMatrixf(FloatBuffer a,
                                     FloatBuffer b,
                                     FloatBuffer d)
Parameters:
a -
b -
d - result a*b

normalize

public static final void normalize(float[] v)
Normalize vector

Parameters:
v - makes len(v)==1

normalize

public static final void normalize(FloatBuffer v)
Normalize vector

Parameters:
v - makes len(v)==1

cross

public static final void cross(float[] v1,
                               float[] v2,
                               float[] result)
Calculate cross-product

Parameters:
v1 -
v2 -
result - v1 X v2

cross

public static final void cross(FloatBuffer v1,
                               FloatBuffer v2,
                               FloatBuffer result)
Calculate cross-product

Parameters:
v1 -
v2 -
result - v1 X v2

multMatrixVecf

public static final void multMatrixVecf(float[] m_in,
                                        int m_in_off,
                                        float[] v_in,
                                        int v_in_off,
                                        float[] v_out)
Method __gluMultMatrixVecf

Parameters:
m_in -
m_in_off -
v_in -
v_out - m_in * v_in

multMatrixVecf

public static final void multMatrixVecf(float[] m_in,
                                        float[] v_in,
                                        float[] v_out)
Method __gluMultMatrixVecf

Parameters:
m_in -
m_in_off -
v_in -
v_out - m_in * v_in

multMatrixVecf

public static final void multMatrixVecf(FloatBuffer m_in,
                                        FloatBuffer v_in,
                                        FloatBuffer v_out)
Method __gluMultMatrixVecf

Parameters:
m_in -
v_in -
v_out - m_in * v_in


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